After that Zero told his group that he was going to travel to 100,000,000 other worlds so he couldn't help then in small problems Zero made 100,000,000 clones of himself
So Zero opens the 100,000,000 doors of another world jumps into the doors and goes to another world as a child to dominate another world's these are the other worlds where Zero has went
1. Naruto
2. bleach
3. black clover
4. one punch man
5. one piece
6. my hero academia
7. hunter x hunter
8. dragon ball
9. MCU
10. DC
11. Harry Potter